Our Optometrists

Dr. Cassandra Mark received her Doctorate of Optometry degree from the New England College of Optometry. She received clinical honors in her training at Boston Medical Center, West Haven Veterans Association Hospital, New England Eye, Boston University Eye Associates, Dimock Community Health Center.

She has a broad range of experience with contact lenses, pediatrics, and individuals with disability, with special interests in dry eye and ocular disease.

During optometry school, Dr. Mark joined 15 other medical professionals to provide eye care to over 450 citizens of Honduras.

Dr. Mark was born and raised in Toronto and attended the University of Waterloo. Her interests include traveling, golf, skiing, and baking for the office staff.

Dr. Sonya N. Sheth joined Sheth Horsley Eye Center in 2017. She has a wide variety of experience in specialty contact lenses, ocular disease, and pre & post management of ocular surgery. She has been practicing for over 20 years, and holds licenses in 6 other states.

Dr. Sheth was born and raised in Illinois, and received her Doctorate degree from Illinois College of Optometry, where she also obtained a second Bachelor's degree in Visual Science. Prior to her optometry career, Dr. Sheth earned her Bachelor's degree in Biology with a Minor in Business from Loyola University Chicago.

Dr. Sheth has participated in more than 65 charity clinics all over the world, and feels "it's an amazing and incredible feeling to give sight and quality of life to someone who has a significant visual defict, but does not have access to eyecare".

Dr. David Chiang has been in practice for over 20 years. He received his Bachelor of Science in Biology with a minor in Theater from the University of California at San Diego and his Doctor of Optometry from the New England College of Optometry. He has current Therapeutic Pharmaceutical Certification in both New York and Massachusetts.

Dr. Chiang brings his experiences in different practice settings including glasses, contact lenses, ocular disease, and more than 15 years co-managing over 30,000 LASIK and PRK eye surgeries.

Dr. Chiang is very passionate about his profession and takes great pride in providing the best vision care that is focused on the needs of each individual patient.

Most Insurances Accepted: